Jack W Love: Tricuspid prosthetic tissue heart valve. Freilich Hornbaker Rosen & Fernandez, September 11, 1984: US04470157 (465 worldwide citation)

A method and apparatus for providing a tricuspid heart valve that can be assembled with autogenous or foreign tissue using a prefabricated kit comprised of two stents that mate together and a sewing ring, one stent inside or below the other, with the tissue clamped between the stents. The inner or l ...

Thomas C Donald, Henry W Donald: Software protection system. C A Phillips, September 11, 1984: US04471163 (278 worldwide citation)

A protection system for controlling the operation of a digital computer as to a particular program wherein a program "lock" interfaces with the computer and authorizes the operation in response only to a selected relation between a number in the program, a number in the lock, and a third number, a " ...

Hany M G Hussein: Endoscopic device. Laserscope, September 11, 1984: US04470407 (232 worldwide citation)

An endoscopic device is disclosed which provides for unobstructed viewing within a body space of a patient. The endoscopic device includes a tube carrying a light transmitting system with a balloon extending over the system. The balloon can be expanded and the interior of the body space inspected or ...

Michael J Pappas, Frederick F Buechel: Joint endoprosthesis. Biomedical Engineering, R Gale Rhodes Jr, September 11, 1984: US04470158 (221 worldwide citation)

Joint endoprosthesis for the total replacement of degenerate joints such as the ankle, knee, elbow, wrist and finger. When embodied as an ankle endoprosthesis (10), the device comprises a tibial component (11) for being secured to the tibia and which provides a first bearing surface (21a); a talar c ...

Thomas V Maxwell: Square-edged laminated wood strip or plank materials. Masonite Corporation, Mason Kolehmainen Rathburn & Wyss, September 11, 1984: US04471012 (219 worldwide citation)

Laminated wood strip or plank flooring members are disclosed having adjacent edges of adjacent strip or plank members slightly reverse-beveled, i.e. 2.degree. to 7.degree. from vertical, to tightly fit together to provide precise, flush contact between adjacent upper surfaces of adjacent strips or p ...

Jun ichi Nishizawa, Masahiro Konishi: Solid-state image sensor with exposure controller. Fuji Photo Film, McGlew and Tuttle, September 11, 1984: US04471228 (217 worldwide citation)

A solid-state image sensor which detects the quantity of light incident on image sensor cells during exposure and performs exposure control in accordance with an exposure value thus obtained. The solid-state image sensor is provided with a photoelectric converter having a plurality of non-destructiv ...

Takezo Sano, Kenichi Tsuruyoshi: Molding apparatus with retractable preform support pins. Omron Tateisi Electronics Co, Cushman Darby & Cushman, September 11, 1984: US04470786 (200 worldwide citation)

A molding method and apparatus in which an insert part is supported in a mold cavity by a pin. The pin is withdrawn when the resin pressure in the mold exceeds a predetermined value.

Edward A Schober: Wireless telephone extension unit with self-contained dipole antenna. GTE Automatic Electric, Robert J Black, Peter Xiarhos, September 11, 1984: US04471493 (169 worldwide citation)

A remote unit for use in a wireless extension telephone system having a self-contained dipole antenna. Utilizing the unique construction of the telephone instrument housing one element of the dipole is included in a planar element that functions normally to direct sound to a self-contained microphon ...

Michael W Conway: Method and compositions for fracturing subterranean formations. Halliburton Company, Robert A Kent, Thomas R Weaver, September 11, 1984: US04470915 (167 worldwide citation)

An aqueous gel containing a crosslinking agent comprising an organotitanate chelate and a retarding agent which delays crosslinking of the gel. This retarding agent comprises a selected polyhydroxycarboxylic acid having from 3 to 7 carbon atoms. The gel is useful for fracturing and placing propping ...

Robert J L Herve: System and process for identification of persons requesting access to particular facilities. Compagnie Internationale pour l Informatique CII Honeywell Bull, Kerkam Stowell Kondracki & Clarke, September 11, 1984: US04471216 (141 worldwide citation)

The user has a credit card incorporating electronic devices and/or circuits. The facility which is to be protected has an electronic device and/or circuit analogous to that of the credit card. The devices of the credit card and of the facility contain in their respective memories a secret code S, an ...